Machine for applying patches to precut-window envelop-blanks.



W. H. BANZETT.

MACHINE FOR APPLYING PATCHES TO PRECUT WINDOW ENVELOP BLANKS.

APPLICATION FILED APR-8.1916.

Patented Mar. 25, 1919.

6] wva Wto z WW? B @51 19W? Que 0142435 Kl/VlJ PGL/g Carrr WILLIAM H. BANZETT, OF BERG-ENFIELD, NEW JERSEY, ASSIGNOR TO MERCANTILE CORPORATION, OF DAYTON, OHIO, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Mar. 25, 1919.

Application filed April 8, 1916. Serial No. 89,769.

To all whom it may concern:

Be it known that I, WInLrAMII-I. BANZETT, a citizen of the United States, residing at Bergenfield, in the county of Bergen and State of New Jersey, have invented certain new anduseful Improvements in Machines for Applying Patches to Precut-VVindow Envelop-Blanks, of which the following is .a full, clear, and exact description.

This invention relates to an improved .pa-tch attaching device for window envelop blanks of the form shown, described and claimed in Patents Nos. 1,104,162, 1,123,659, and 1,118,466. Inthe prior machines the rhom'b-shaped blankswere presented to the rotary platen or blank bed in such a manner that their minor axes were tangential to the periphery of the rotary platen and in advancing through the machine the minor axis was at all times substantially parallel to the direction of travel. Such a structure and mode of operation necessitated a widthwise applying of patches. Under certain conditions as, for example, when very large blanks are used this mode of operation becomes unsatisfactory. The present machine ,provides for applying the rhomb in a lengthwise manner to the rotary platen or blank bed. The rhomb blank is presented to the rotary platen with the major axis tangential to the periphery thereofand in its passage through the machine the major axis of the blank extends circumferentially about the rotary platen cylinder. In other words, the blank advances through the machine with the major axis parallel to the direction of travel therethrough. In this way patches may be applied lengthwise over the window aper tures, and the operation of supplying and applying the patches is simplified. This in vention also includes improvements in the patch feeding, gripping and securing devices, which will be pointed out in more detail in the accompanying specification.

In the drawings Figure 1 is side view of the improved machine. Certain parts are shown in section to show the construction. 1

.Fig. 2 is a detail view of the devices which remove the blanks from the stack and transfer them to the platen cylinder.

Fig. 3 is a diagrammatic view of the blanks showing the various steps performed by the machine in attaching the patches.

In more detail in the drawings, 10 represents the stack of precut window envelop blanks of the shape shown at A in Fig. 3. These blanks are carried on sloping rails 11 and are maintained in position on the rails by end clips 12. In front of and near the upper edge of the pile of blanks is a. rotary platen cylinder or blank bed 13. Below the platen cylinder are oscillating take olf bars 14. These bars 14 are rocked toward cylinder 13 by a follower 15, which cooperates with a cam on the shaft carrying the cylinder '13. The bars 14 are restored to their position against the stack by a spring. I also provide a finger bar 60, which contacts with the stack of blanks and holds them in position after the take oif bars move away.

This finger bar is operated by a cam and follower 61 in one direction and by a spring 62 in the opposite. direction.

The bars 14 carry air suction tubes 17, which are open at their ends in the faces of bars 14, which are toward the blanks. The air suction in the tubes is adapted to withdraw one blank at a time from the stack and to hold the blank to the take off bars until it is removed therefrom by the grippers on the platen cylinder. The air suction is produced by a pump (not shown) and is controlled by an air valve 16, operated by a rod, which cotioperates with a cam on the shaft carrying the gummer 18. The gummer rotates in harmony with the platen cylinder 13,.and consequently the air suction is controlled in harmony with the rotation of platen 13 and with the oscillation of take off bars14. A suitable spring 19 holds the 7 shown diagrammatically in dotted lines in Fig. 2. The above mentioned grippers hold the blank to the cylinder in its forward rotation aided by spring pressed rolls 22. A

second idler roll 23 also aids in maintaining the blank in proper osition on the cylinder. The devices just escribed are adapted to apply the precut blanks one at a time to the rotary platen cylinder. The blanks are presented in such a manner that the ma or axis of each blank, as it is presented, is tangential to the periphery of the cylinder and in its travel through the machine after it is gripped onto the cylinder the major axis of each blank extends circumferentially around the cylinder and in a direction parallel to the direction of travel of the blank.

Gummer 18 takes gum from the gum box by the usual ductor rolls and applies the gum to the blank on the blank bed about the margins of the window as shown at B in Fig. 3.

' Patch devices.

The transparent patch paper is rolled up on a supply roll 24, which roll is tensioned by a gravity"brake 25. The paper web 26 is fed between feeding rolls 27 and 28 which are geared together to rotate in unison. These rolls "are adapted to be given an intermittent forward rotation, by the following mechanism. A suitable cam on the shaft carrying patch bed 37 forces a follower 29 outwardly against the action of spring 30 and rocks segment 31 in a counterclockwise direction. During this movement, a ratchet and pawl device 32 is restored, the pawl moving idly over the ratchet. At the proper time the spring 30 forces the follower 29 inward rocking the segment 31 and by means of the pawl and ratchet de vice turns the feed'rolls 27 and'28 to a suificient extent to advance a length of patch paper. The patch paper advances between fixed knife 34 and movable knife 35 and between guides 36, which guide the patch over the rotary patch bed 37. At the proper period in the cycle the movable knife 35 is forced downward by cam on the shaft carrying guminer 18 and a patch is severed from the web 26. The rotary patch bed 37 is carried on a shaft 38, which is geared tov rotate in unison with platen cylinder 13. At one end of the patch bed there are a number of holes 40, which connect with a duct 41, leading to a duct in the center of shaft 38. This duct in the shaft 38 is adapted to be opened and closed by a suitable air valve (not shown), which leads to any air suction means, such as a pump. The timing of the air valve is such that it opens just as the holes 40 pass under the patch strip. The suction of the air grips the patch to the patch bed and maintains it in position thereon until the end of the patch has been rolled into contact with the guinmed surface on the blank, which is carried by platen cylinder 13.- The air valve then closes to suction and opens to the atmosphere and the patch can then leave the patch bed and follow the blank to which it is secured by the gum.

In order that the patch be properly timed in its application to the rotary patch bed so that it will accurately register with the winmenace dow in the blank, I provide additional mechanism which will now be described. A feed roll as is mounted on a bell crank, which crank is lifted by a cam on the rotary patch bed shaft. The feed roll is provided with gear teeth meshing with teeth on the gear 43, shown by dotted circle. The feed roll is also cut away as shown at 44. The'operation of these parts is as follows: The patch is fed into the cut away portion 44 of feed roll 42. At the proper period the feed roll is lowered by the cam and the part of the feed roll which is notcut away comes into contact with the leading end of the rotary patch bed. The feed roll 42 and the patch bed 37 then act as feed rolls for the patch paper and draw it forward. Atthe same time the air suction is applied to hold the patch to the patch bed; After the patch has been secured to the patch bed the feed roll is lifted by its cam and maintained in elevated position ready for the nextoperation. It will be understood that the above described device's prevent any missing of patches which might take place if air alone were utilized to pick up the stationary patches and cause them to move forward in unison with the patch bed. At the same time the application of the patches to the blank on the'blank bed is accurately timed insuring proper registration over the windows in the blank.

I also provide a pivoted idler roller s6, which is adapted "to hold theloose end of the patch down on patch bed 37 in'its forward rotation.

Blank delc'cery devices.

Just as the grippers 20 and 21 pass the median line of platen cylinder 13 and the rotary patch bed 37, they are released permitting the blank to pass between vertical guides 47, which lead the blank to blank delivery rolls 48. It will be understood that the platen roll is slottedin its periphery to provide clearance for the left hand guide fingers as shown by the breaking away of the sectioned periphery in Fig. 1.

After the blanks pass the feed rolls they are delivered to a delivery chain 49, which is provided with suitable grippers 50, cooperating with posts 51 carried by the chain. A. fixed cam 52 opens the grippers to receive the blank between the post and the grippers and a second fixed cam 53 opens the grippers when the blank is to be removed from the chain. To remove the blank from the chain, I provide a flapper bar 54 suitably oscillated as by the cam and spring device as shown, which is adapted to displace the blank to the right and place it upon storage rails 55. It will be understood that both the flapper bar and the chain operate in harmony with each other and with the platen cylinder 13.

neon-ea In the operation of the device, the platen roll 13 and the patch bed 37 firmly press the patch and the blank together with a rolling action and produce the completed patched blank shown at C in Fig. 3. By reason of the air suction, means for holding the patches to the rotary patch bed, gripper fingers for holding the patch can be eliminated. This is an advantage as the use of gripper fingers for this purpose tends to slightly mar the envelop blank.

- It is to be understood that my invention is not limited to the precise details of construction shown and described, but that various modifications can be made as will readily occur to those skilled in the art. What I claim as my invention is more particularly defined in the appended claims.

I claim:

1. In a patclr applying machine, in combination, a rotary platen; means for supplying pre-cut notched rhomb shaped window envelop blanks from a stack to SZLlCl rotary platen, said means having provisions to supply the said blanks with the major axes thereof tangential to the periphery of the rotary platen; said rotary platen having means which is adapted to grip the leading corner of the blank and withdraw the same from the stack, and having supplementary means for thereafter gripping the blank adjacent the notches to secure the same to the rotary platen; means for gumming the said blanks about the borders of'the pre cut window; a rotary patch bed; means for advancing patch material to the said rotary patch bed; means for securing said patc material to therotary patch bed, said patch extending longitudinally about the periphery of the patch bed; means for rotating the patch bed for rolling the patch upon the blank and securing the patch thereto by the gum thereon; and means for concurrently disengaging the patch from the rotary patch bed.

2. In a patch applying machine, in combination, a rotary platen cylinder, means for supplying pre-cut notched rhomb shaped window envelop blanks from a stack to said rotary platen cylinder, said means having provisions to present the blanks to the rotary platen cylinder with the major axes of the blanks tangential to the periphery thereof, whereby a blank will advance around the platen cylinder with its major axis extending ci-rcumferentially around the periphery of the cylinder; said rotary platen cylinder having means which is adapted to grip the leading corner of the blank and withdraw the same from the stack, and having supplementary means for thereafter gripping the blank adjacent the notches to secure the same to the rotary platen cylinder; means for gumming the aforesaid blanks about the borders of the pre-cut windows; and means for applying patch material over the aforesaid windows, said material being secured by the gummed borders to the said blank.

3. In a patch attaching device, in combination with a rotary blank bed carrying precut gummed window envelop blanks; a

rotary patch bed having air suction means to engage the patches thereto and adapted to roll the patches into engagement with the blanks on the blank bed; means for advancing patch material to said oatch bed, and a cooperating intermittently effective patch feed means comprising a pressure roll adjacent the rotary patch bed and adapted to roll the patch material onto said bed.

i; In a device of the class described, in combination; a rotary blank bed; a rotary patch bed having air suction means for securing patches thereto, said patch bed being adapted to roll the said patches into engagement with the blanks on said blank bed; means for supplying patch material to said patch bed, said means comprising patch material feeding rolls; a severing knife, an intermitently 'efi'ective timing roll adapted to press the patches firmly to the rotary patch bed to permit them being engaged by air suction and to cooperate with the patch bed to give the patches their initial advancing movement.

5. In a device of the class described, in combination, a rotary blank bed; a rotary patch bed adapted to carry patches into engagement with gummed blanks on said blank bed; means for supplying patch mate'- rial to said patch bed, said means comprising a feeding means adapted to advance a length of patch material from the supply roll; a severing knife for cutting the patch material into the proper lengths; a feeding roll adapted to be raised and lowered from and into contact with the patch material on said patch bed and to thereby firmly press the said patches into close contact with the patch bed, and to thereby cooperate with the said patch bed to give the patches their initial advancing movement.

6. In a patch attaching device, in com bination with a rotary blank bed adapted to carry precut window envelop blanks; means for gumming the said blanks; means for rolling patch material into engagement with the gummed blanks, said means comprising a rotary patch bed, said patch bed having air suction means for maintaining the for gumming the said blanks; means for rolling patch material into engagement With the gummed blanks, said means comprising a rotary patch bed, said patch bed having air suction means for maintaining the patches in position thereon, said air suction means comprising an air port adapted to hold the leading end of the patch, and means for advancing patch material to said patch bed and for pressing the leading end of the patch firmly down upon the air port concurrently with the advancement thereof, whereby missing of patches is obviated and the patches are accurately registered on the patch bed.

8. In a machine of the class described, a cylinder over Which the envelop blank is passed, a rotative patch holding block comenses operating with the cylinder and provided with suction devices by which a patch is held thereon, said block being adapted to roll the patch upon the blank carried by the cylinder upon the rotation of the blank, a guide for supporting a patch in position to be engaged by said suction devices, and means for registering the patch relatively to the patch holder as it passes from the guide to said patch holding block.

In testimony whereof I hereunto affix my signature in the presence of two subscribing Witnesses.

WILLIAM H. BANZETT.

Witnesses FELIX THOMAS, J. B, MCGUIRE. 

